As the federal government shutdown drags on, airlines are being forced to slash flights across the country — including at major New York–area airports — just weeks before Thanksgiving travel begins.

LaGuardia, JFK, Newark Liberty, and Teterboro are among 40 “high-impact” airports where the Federal Aviation Administration (FAA) has ordered airlines to reduce operations starting Friday.

Under the emergency directive, airlines must cut 4% of scheduled flights beginning Friday, increasing to 6% by Nov. 11, 8% by Nov. 13, and 10% by Nov. 14.

Airlines that exceed their allocated flight limits will face $75,000 fines per flight, according to the FAA order.

The reductions are expected to eliminate thousands of flights daily nationwide as staffing shortages among unpaid air-traffic controllers worsen during the shutdown.

Transportation Secretary Sean Duffy said that further reductions may be required if absentee rates rise. “If controllers keep calling out in higher numbers, we may have to ask airlines to cancel more than 10% of flights,” Duffy said.

The cuts come at a critical time for the U.S. aviation system, with millions of travelers expected to take to the skies for Thanksgiving week — typically one of the busiest travel periods of the year.